Yahya related to me from Malik from Ibn Shihab from Salim ibn Abdullah that Abdullah ibn Umar used to say, "Things that pass in front of a man praying do not break his prayer."
أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ كَانَ يَقُولُ لاَ يَقْطَعُ الصَّلاَةَ شَىْءٌ مِمَّا يَمُرُّ بَيْنَ يَدَىِ الْمُصَلِّي