Imam Baqir (as) said: Humans, Jinns, birds and beasts; all shed tears for Husain bin Ali (as). (Kamil al-Ziyarat h. # 1)
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Imam al-Sadiq (AS) said, ‘Every single thing has a measure or a weight, except for tears; for one drop of them can extinguish seas of Fire. If an eye is filled with tears, the face will never be burdened with neediness or humiliation; and if it floods with tears then Allah will make it unlawful for the Fire to touch it. Indeed, if a teary man cries for a community, they all receive mercy.’ Mizan al-Hikmah h. 4454
The angel who came to Allah’s Messenger (s.a.w.s.) and informed him about the martyrdom of Imam Husain (a.s.) was the angel of the oceans. An angel of Paradise flew down to an ocean, with his wings spread out over the ocean crying: “O folks of the oceans! Put on the garments of grief, for the son of Allahs Messenger (s.a.w.s.) will be slaughtered.” Then he carried some dust of Imam Husain (a.s.) in his wings to the heavens. There was no angel that did not smell it and was not affected by it and they cursed the killers of Husain (a.s.) and their followers. (Kamil al-Ziyrat h. #3)
وَهُوَ الَّذي أَنزَلَ مِنَ السَّماءِ ماءً فَأَخرَجنا بِهِ نَباتَ كُلِّ شَيءٍ فَأَخرَجنا مِنهُ خَضِرًا نُخرِجُ مِنهُ حَبًّا مُتَراكِبًا وَمِنَ النَّخلِ مِن طَلعِها قِنوانٌ دانِيَةٌ وَجَنّاتٍ مِن أَعنابٍ وَالزَّيتونَ وَالرُّمّانَ مُشتَبِهًا وَغَيرَ مُتَشابِهٍ ۗ انظُروا إِلىٰ ثَمَرِهِ إِذا أَثمَرَ وَيَنعِهِ ۚ إِنَّ في ذٰلِكُم لَآياتٍ لِقَومٍ يُؤمِنونَ
It is He who sent down out of heaven water, and thereby We have brought forth the shoot of every plant, and then We have brought forth the green leaf of it, bringing forth from it close-compounded grain, and out of the palm-tree, from the spathe of it, dates thick-lustered, ready to the hand, and gardens of vines, olives, pomegranates, like each to each, and each unlike to each. Look upon their fruits when they fructify and ripen! Surely, in all this are signs for a people who do believe.