وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ صَفْوَانَ، أَنَّهُ قَالَ جَاءَ عَبْدُ اللَّهِ بْنُ عُمَرَ يَعُودُ عَبْدَ اللَّهِ بْنَ صَفْوَانَ فَصَلَّى لَنَا رَكْعَتَيْنِ ثُمَّ انْصَرَفَ فَقُمْنَا فَأَتْمَمْنَا ‏.‏

Yahya related to me from Malik from Ibn Shihab that Safwan said,"Abdullah ibn Umar used to come and visit Abdullah ibn Safwan and hewould pray two rakas with us, and when he went away we would stand andcomplete the prayer." Translation Not Available

Book Ref: Muwatta Imam Malik Book 9 Hadith 352
Web Ref:  Muwatta Imam Malik Book 9 Hadith 23

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