Hadith 31-126

وَبِهذَا الإِسنادِ عَنْ عَلِيِ‏ عَلَيْهِ السَّلامُ قالَ: الطَّيِّبُ نَشرَةٌ، وَالغَسْلُ نُشرَةٌ وَالرُّكُوبُ نُشرَةٌ، وَالنَّظَرُ إِلَى الخُضرَةَ نُشرَةٌ.

According to the same documentation, Ali (a.s.) said, “Good scent, washing, riding and looking at greenery are calming.”