Sahih al-Bukhari · The Book of Commentary

18- بَابُ: {الَّذِينَ يَذْكُرُونَ اللَّهَ قِيَامًا وَقُعُودًا وَعَلَى جُنُوبِهِمْ وَيَتَفَكَّرُونَ فِي خَلْقِ السَّمَوَاتِ وَالأَرْضِ}:

(18) Chapter. “Those who remember Allah (always and in prayers), standing, sitting, and lying down on their sides; and think deeply about the creation of the heavens and the earth...” (V.3:191)

1 hadith · references 4570–4570