Sahih al-Bukhari 4731
Sahih al-Bukhari · Book 65: Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)) · The Statement of Allah the Exalted: "And (remember) when Mūsa (Moses) said to his boy-servant: 'I will not give up (travelling) until I reach the junction of the two seas or (until) I spend years and years in travelling." (V.18:60)
Narrated Ibn `Abbas:
حَدَّثَنَا أَبُو نُعَيْمٍ ، حَدَّثَنَا عُمَرُ بْنُ ذَرٍّ ، قَالَ سَمِعْتُ أَبِي ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم لِجِبْرِيلَ " مَا يَمْنَعُكَ أَنْ تَزُورَنَا أَكْثَرَ مِمَّا تَزُورُنَا فَنَزَلَتْ {وَمَا نَتَنَزَّلُ إِلاَّ بِأَمْرِ رَبِّكَ لَهُ مَا بَيْنَ أَيْدِينَا وَمَا خَلْفَنَا} "
The Prophet (ﷺ) said to Gabriel, "What prevents you from visiting us more often than you visit us now?" So there was revealed:-- 'And we (angels) descend not but by the command of your Lord. To Him belongs what is before us and what is behind us...'(19.64)