[Machine] Narrated by the Prophet ﷺ , that he only saw Gabriel in his true form twice. As for the first time, Gabriel asked to show him his own form, so he showed him, and he came to him, covering the horizon. As for the second time, Gabriel was with him when he ascended during the incident of "And then he drew near and came closer until he was as close as two bow lengths or even closer. Then He revealed to His servant what He revealed." So, when Gabriel finished, he returned to his true form, as mentioned in the verse "And certainly, he saw him a second time, near the Lote Tree." The Lote Tree is the furthest point reached by Gabriel; it is in Paradise, close to the Paradise of Abode, as mentioned in the verse "Indeed, he saw him in another descent, by the Lote Tree, beyond which none may pass; near it is the Garden of Refuge." Regarding the statement "He has certainly seen of the greatest signs of his Lord," it means the creation of Gabriel.
عَنِ النَّبِيِّ ﷺ أَنَّهُ لَمْ يَرَ جِبْرِيلَ فِي صُورَتِهِ إِلَّا مَرَّتَيْنِ قَالَ أَمَّا مَرَّةٌ فَإِنَّهُ سَأَلَهُ أَنْ يُرِيَهُ نَفْسَهُ فِي صُورَتِهِ فَأَرَاهُ فَأَتَاهُ يَسُدُّ الْأُفُقَ وَأَمَّا الثَّانِيَةُ فَإِنَّهُ كَانَ مَعَهُ إِذْ صَعِدَ فِي قَوْلِهِ {ثُمَّ دَنَا فَتَدَلَّى فَكَانَ قَابَ قَوْسَيْنِ أَوْ أَدْنَى فَأَوْحَى إِلَى عَبْدِهِ مَا أَوْحَى} فَلَمَّا أَنْ حَسَّ جِبْرِيلُ رَبَّهُ ﷻ عَادَ فِي صُورَتِهِ فَذَلِكَ قَوْلُهُ {وَلَقَدْ رَآهُ نَزْلَةً أُخْرَى عِنْدَ سِدْرَةِ} الْمُنْتَهَى عِنْدَهَا جَنَّةُ الْمَأْوَى إِلَى قَوْلِهِ {لَقَدْ رَأَى مِنْ آيَاتِ رَبِّهِ الْكُبْرَى} قَالَ «خَلْقِ جِبْرِيلَ»