Uthman ibn Hunayf reported: A man with damaged eyesight came to the Prophet, peace and blessings be upon him, and he said, “Supplicate for Allah to heal me.” The Prophet said, “I will supplicate for you if you wish, or it is better for you to be patient if you wish.” The man said, “Supplicate for me.” The Prophet ordered him to perform ablution in the best manner and to supplicate with these words, “O Allah, I ask You and turn to You by Your Prophet Muhammad, the Prophet of Mercy. I turn by you to my Lord to fulfill this need of mine. O Allah, accept his intercession for me.”
Source: Sunan al-Tirmidhī 3578
Grade: Sahih (authentic) according to Al-Albani
Ibn Taymiyyah said, “We know that Umar and the senior companions did not consider this to be legislated after the death of the Prophet (ṣ) as it was during his life. Rather, they used to ask him to supplicate for rain and use him as a means, but after he died they no longer used him as a means.”
Source: Qāʻidah Jalīlah fī al-Tawassul wal-Wasīlah 1/228
عَنْ عُثْمَانَ بْنِ حُنَيْفٍ أَنَّ رَجُلًا ضَرِيرَ الْبَصَرِ أَتَى النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ ادْعُ اللَّهَ أَنْ يُعَافِيَنِي قَالَ إِنْ شِئْتَ دَعَوْتُ وَإِنْ شِئْتَ صَبَرْتَ فَهُوَ خَيْرٌ لَكَ قَالَ فَادْعُهْ قَالَ فَأَمَرَهُ أَنْ يَتَوَضَّأَ فَيُحْسِنَ وُضُوءَهُ وَيَدْعُوَ بِهَذَا الدُّعَاءِ اللَّهُمَّ إِنِّي أَسْأَلُكَ وَأَتَوَجَّهُ إِلَيْكَ بِنَبِيِّكَ مُحَمَّدٍ نَبِيِّ الرَّحْمَةِ إِنِّي تَوَجَّهْتُ بِكَ إِلَى رَبِّي فِي حَاجَتِي هَذِهِ لِتُقْضَى لِيَ اللَّهُمَّ فَشَفِّعْهُ فِيَّ
3578 سنن الترمذي كتاب الدعوات باب
3578 المحدث الألباني خلاصة حكم المحدث صحيح في صحيح الترمذي
قال ابن تيمية فقد علمنا أن عمر وأكابر الصحابة لم يروا هذا مشروعاً بعد مماته صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كما كان يشرع في حياته بل كانوا في الاستسقاء في حياته يتوسلون به فلما مات لم يتوسلوا
1/228 قاعدة جليلة في التوسل والوسيلة