Abu Mas'ud al-Ansari reported Messenger of Allah ﷺ as saying: Verily the sun and the moon are the two signs among the signs of Allah by which He frightens his servants and they do not eclipse on account of the death of any one of the people. So when you see anything about them, observe prayer, supplicate Allah till it is cleared from you.

وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا هُشَيْمٌ، عَنْ إِسْمَاعِيلَ، عَنْ قَيْسِ بْنِ أَبِي حَازِمٍ، عَنْ أَبِي مَسْعُودٍ الأَنْصَارِيِّ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ
" إِنَّ الشَّمْسَ وَالْقَمَرَ آيَتَانِ مِنْ آيَاتِ اللَّهِ يُخَوِّفُ اللَّهُ بِهِمَا عِبَادَهُ وَإِنَّهُمَا لاَ يَنْكَسِفَانِ لِمَوْتِ أَحَدٍ مِنَ النَّاسِ فَإِذَا رَأَيْتُمْ مِنْهَا شَيْئًا فَصَلُّوا وَادْعُوا اللَّهَ حَتَّى يُكْشَفَ مَا بِكُمْ " .