Al-Kāfi

Hadith 1876
night-prayer
4ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ إِسْمَاعِيلَ عَنْ أَبِي إِسْمَاعِيلَ السَّرَّاجِ عَنْ هَارُونَ بْنِ خَارِجَةَ قَالَ ذَكَرْتُ لأَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) رَجُلاً مِنْ أَصْحَابِنَا فَأَحْسَنْتُ عَلَيْهِ الثَّنَاءَ فَقَالَ لِي كَيْفَ صَلاَتُهُ.
4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn Isma’if from abu Isma’if af-Sarraj from Harun ibn Kharijah who has said the following: “Once I spoke before abu ‘Abd Allah (a.s.), about a man of our people and I praised him well. The Imam asked, ‘How is his Salah (prayer)?”’
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī