اللَّهُمَّ فَقِّهْهُ فِي الدِّينِ وَعَلِّمْهُ التَّأْوِيلَ
Allahumma faqqihhu fid-dini wa 'allimhut-ta'wil
O Allah, give him deep understanding of the religion and teach him the interpretation.
The Prophet ﷺ made this du'a for his young cousin Abdullah ibn Abbas (RA) — who went on to become the greatest scholar of Tafsir in Islamic history, known as "Tarjuman al-Quran" (The Interpreter of the Quran). One du'a from the Prophet ﷺ shaped the course of Islamic scholarship forever. It shows the power of a sincere du'a made for someone by name.
Related Du'as
رَبَّنَا أَتْمِمْ لَنَا نُورَنَا وَاغْفِرْ لَنَا إِنَّكَ عَلَىٰ كُلِّ شَيْءٍ قَدِيرٌ
Our Lord, perfect our light for us and forgive us. Indeed, You are over all things capable.
Sahihاللَّهُمَّ أَرِنِي الْحَقَّ حَقًّا وَارْزُقْنِي اتِّبَاعَهُ وَأَرِنِي الْبَاطِلَ بَاطِلًا وَارْزُقْنِي اجْتِنَابَهُ
O Allah, show me the truth as truth and grant me the ability to follow it, and show me falsehood as falsehood and grant me the ability to avoid it.
Hasanاهْدِنَا الصِّرَاطَ الْمُسْتَقِيمَ صِرَاطَ الَّذِينَ أَنْعَمْتَ عَلَيْهِمْ غَيْرِ الْمَغْضُوبِ عَلَيْهِمْ وَلَا الضَّالِّينَ
Guide us to the straight path — the path of those You have blessed, not of those who earned anger, nor of those who went astray.
Sahihاللَّهُمَّ يَا مُقَلِّبَ الْقُلُوبِ ثَبِّتْ قَلْبِي عَلَى دِينِكَ
O Allah, O Turner of hearts, make my heart firm upon Your religion.
Sahih