Question:
What is the Islamic ruling on the sale and installation of solar energy systems or heat pumps where the cash price is lower and the instalment price is higher but fixed and agreed in advance, and where a third-party finance company pays the supplier upfront and then collects fixed instalments from the customer, without imposing any additional charges after the contract is concluded? Is such an arrangement permissible according to the Qur’an, Sunnah, Islamic jurisprudence?
Answer:
The fundamental principle in Islamic commercial law is that financial transactions are permissible unless there is clear evidence establishing their prohibition. Allah the Exalted says: وَأَحَلَّ اللَّهُ الْبَيْعَ وَحَرَّمَ الرِّبَا – “Allah has made trading lawful and forbidden usury.” (Al-Baqarah:275) This verse establishes the fundamental distinction between lawful commercial exchange and unlawful gain derived from lending money for profit.
Allah the Exalted also says: يَا أَيُّهَا الَّذِينَ آمَنُوا إِذَا تَدَايَنتُمْ بِدَيْنٍ إِلَىٰ أَجَلٍ مُسَمًّى فَاكْتُبُوهُ – “Believers, when you enter into a loan agreement for a fixed period, then write it down, and the scribe must write it accurately.” (Al-Baqarah:282)
This verse demonstrates the legitimacy of deferred payment arrangements and confirms that Sharia recognises financial obligations payable over time when they are properly documented and clearly defined.
The permissibility of deferred sales is further established by the Sunnah. It is narrated from Sayyidah Aisha that: اشترى رسول الله ﷺ من يهودي طعامًا إلى أجل ورهنه درعًا من حديد – “The Messenger of Allah ﷺ purchased food from a Jew on deferred payment and pledged his armour as security.” This hadith provides clear evidence that credit sales and deferred payment arrangements are permissible in principle.
Based upon these, most jurists from the four Sunni schools held that it is permissible for a seller to charge a higher price for deferred payment than for immediate cash payment, provided that the final price is fixed and agreed upon at the time of contract. Imam al-Kasani states in Bada’iʿ al-Ṣana’iʿ: الثمن قد يختلف باختلاف الأجل – “The price may vary according to the period of deferment.”
Imam al-Nawawi writes in al-Majmuʿ: الأصح جواز البيع بثمن مؤجل زائد على ثمن الحال – “The stronger opinion is that it is permissible to sell at a deferred price higher than the cash price.”
Ibn Qudamah states in al-Mughni: إذا باعه بثمن مؤجل أكثر من ثمنه حالًا جاز – “If he sells it on deferred payment for more than its immediate cash price, it is permissible.”
Likewise, Ibn Rushd notes in Bidayat al-Mujtahid that the jurists generally accepted deferred sales when their conditions were fulfilled. These authorities demonstrate that an increase in price due to deferred payment is regarded as part of a lawful sale transaction and not as riba.
Contemporary Islamic scholars and institutions have reaffirmed this position. The International Islamic Fiqh Academy (Majmaʿ al-Fiqh al-Islami), the Sharia Standards of AAOIFI, Shaykh Dr. Wahbah al-Zuhayli, and Justice Mufti Muhammad Taqi Usmani have all recognised the permissibility of instalment sales where the final sale price is fixed at the time of agreement and where no additional increase is imposed because of late payment or extension of the debt. Modern Islamic finance has therefore accepted deferred sales (بيع التقسيط) and Murabahah transactions as legitimate alternatives to interest-based lending, provided that the underlying contracts satisfy the requirements of Sharia.
Regarding the involvement of a finance company, the ruling depends upon the true legal and commercial substance of the arrangement rather than the terminology used. The juristic maxim states: العبرة في العقود للمقاصد والمعاني لا للألفاظ والمباني – “Contracts are judged according to their objectives and realities, not merely by their wording and form.”
Therefore, if the finance company genuinely purchases the asset, assumes ownership and commercial risk, and then sells it to the customer at a fixed deferred price (as in a valid Murabahah arrangement), or if it merely acts as an agent or service provider for a fixed fee without lending money on interest, then the arrangement may be considered permissible.
However, if the reality of the transaction is that the finance company advances money and earns a return solely because of the passage of time, then the arrangement falls within the scope of ribā regardless of the terminology employed. The Prophet ﷺ warned against all forms of participation in riba, saying: لَعَنَ اللَّهُ آكِلَ الرِّبَا وَمُوكِلَهُ وَكَاتِبَهُ وَشَاهِدَيْهِ – “Allah has cursed the one who consumes riba, the one who pays it, the one who records it, and the two who witness it.” (Muslim)
From the perspective of the higher objectives of Sharia (مقاصد الشريعة), a properly structured instalment sale serves several recognised objectives.
- It contributes to حفظ المال (protection of wealth) by enabling individuals and families to acquire beneficial assets without resorting to exploitative lending.
- It fulfils the objective of رفع الحرج والتيسير (removal of hardship and facilitation) by allowing essential and beneficial technologies to be obtained through affordable payment arrangements.
- It promotes العدل (justice) by linking profit to genuine commercial activity rather than to the mere passage of time.
- It also supports المصلحة العامة (public welfare) by encouraging investment in renewable energy technologies that reduce energy costs, enhance sustainability, and contribute to environmental stewardship. Such benefits are recognised by Sharia provided that the means used to achieve them remain lawful.
In conclusion, the sale and installation of solar energy systems or heat pumps at a higher deferred price than the cash price is, in principle, permissible, provided that the final price is fixed and agreed upon at the time of contract, the terms are clear and transparent, and no additional interest-based charges arise thereafter. The permissibility of involving a finance company depends entirely on the actual structure of the financing arrangement. If the structure is based on a genuine sale, Murabahah, or lawful agency arrangement, it may be permissible. If, however, it is based on an interest-bearing loan or any mechanism that generates profit from debt solely due to the passage of time, it would fall within the prohibition of ribā. Therefore, a definitive ruling in any specific case requires a detailed review of the contractual documents and the practical operation of the financing structure.
And Allah Ta’ala knows best
Mufti Dr Hafiz M Munir Al-Azhari