وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، أَنَّهُ قَالَ رَأَيْتُ عَبْدَ اللَّهِ بْنَ عُمَرَ يَسْجُدُ فِي سُورَةِ الْحَجِّ سَجْدَتَيْنِ ‏.‏

Yahya related to me from Malik that Abdullah ibn Dinar said, "Isaw Abdullah ibn Umar prostrate twice in Surat al-Hajj (Sura 22)." Translation Not Available

Book Ref: Muwatta Imam Malik Book 15 Hadith 486
Web Ref:  Muwatta Imam Malik Book 15 Hadith 14