ENOfficial
`Ali b. Abu Talib said: Once when I was with the Prophet (ﷺ) in Mecca and we went out into one of its districts in the neighbourhood, not a mountain or tree which confronted him failed to say, "Peace be upon you, messenger of God." Tirmidhi and Darimi transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ عَلِيَّ بْنَ أَبِي طَالِبٍ رَضِيَ اللَّهُ عَنْهُ قَالَ كُنْتُ مَعَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِمَكَّةَ فَخَرَجْنَا فِي بَعْضِ نَوَاحِيهَا فَمَا اسْتَقْبَلَهُ جَبَلٌ وَلَا شَجَرٌ إِلَّا وَهُوَ يَقُولُ: السَّلَامُ عَلَيْكَ يَا رَسُولَ اللَّهِ. رَوَاهُ التِّرْمِذِيّ والدارمي
sunnah.com