Muwatta Malik · Hadith 506

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، قَالَ رَآنِي عَبْدُ اللَّهِ بْنُ عُمَرَ وَأَنَا أَدْعُو، وَأُشِيرُ، بِأَصْبُعَيْنِ أَصْبُعٍ مِنْ كُلِّ يَدٍ فَنَهَانِي ‏.‏

Yahya related to me from Malik that Abdullah ibn Dinar said, "Abdullah ibn Umar saw me when I was making dua and I was pointing with two fingers, one from each hand, and he forbade me

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).