Narrated Abdullah:

Regarding the Verse: "Indeed he (Muhammad) did see. Of the Signs of his Lord, The Greatest!" (53.18) That the Prophet had seen a green carpet spread all over the horizon of the sky.

حَدَّثَنَا حَفْصُ بْنُ عُمَرَ، حَدَّثَنَا شُعْبَةُ، عَنِ الأَعْمَشِ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه – {لَقَدْ رَأَى مِنْ آيَاتِ رَبِّهِ الْكُبْرَى} قَالَ رَأَى رَفْرَفًا أَخْضَرَ سَدَّ أُفُقَ السَّمَاءِ.