Al-Kāfi - Volume 2 > Asking Favors from Allah for the Holy Prophet, Muhammad and his Family, recipient of divine supreme covenant
Hadith #17

17ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُحَسِّنِ بْنِ أَحْمَدَ عَنْ أَبَانٍ الأحْمَرِ عَنْ عَبْدِ السَّلامِ بْنِ نُعَيْمٍ قَالَ قُلْتُ لأبِي عَبْدِ الله (عَلَيهِ السَّلام) إِنِّي دَخَلْتُ الْبَيْتَ وَلَمْ يَحْضُرْنِي شَيْ‏ءٌ مِنَ الدُّعَاءِ إِلا الصَّلاةُ عَلَى مُحَمَّدٍ وَآلِ مُحَمَّدٍ فَقَالَ أَمَا إِنَّهُ لَمْ يَخْرُجْ أَحَدٌ بِأَفْضَلَ مِمَّا خَرَجْتَ بِهِ.

17. A number of our people have narrated from Ahmad ibn Muhammad from Muhsin ibn Ahmad from Aban al-Ahmar from ‘Abd al-Salam ibn al-Nu’aym who has said the following: “Once I said to abu ‘Abd Allah (a.s.) ‘I entered the house and I did not remember any prayer except asking from Allah al-Salat (favors) for the Holy Prophet and his family.’ The Imam said, ‘You should know that no one has come up with something better than what you have.’”