أَيَّامًا مَّعْدُودَٰتٍ ۚ فَمَن كَانَ مِنكُم مَّرِيضًا أَوْ عَلَىٰ سَفَرٍ فَعِدَّةٌ مِّنْ أَيَّامٍ أُخَرَ ۚ وَعَلَى ٱلَّذِينَ يُطِيقُونَهُۥ فِدْيَةٌ طَعَامُ مِسْكِينٍ ۖ فَمَن تَطَوَّعَ خَيْرًا فَهُوَ خَيْرٌ لَّهُۥ ۚ وَأَن تَصُومُوا۟ خَيْرٌ لَّكُمْ ۖ إِن كُنتُمْ تَعْلَمُونَ
[Fasting for] a limited number of days. So whoever among you is ill or on a journey [during them] – then an equal number of days [are to be made up]. And upon those who are able [to fast, but with hardship] – a ransom [as substitute] of feeding a poor person [each day]. And whoever volunteers excess – it is better for him. But to fast is best for you, if you only knew.
Surah Baqarah Ayat 184

Hz. Talha ibn Ubayd ^Rz reported: Whenever the Messenger of Allah ^PBUH, saw the crescent moon, he would say:
اللَّهُمَّ أَهْلِلْهُ عَلَيْنَا بِالْيُمْنِ وَالْإِيمَانِ وَالسَّلَامَةِ وَالْإِسْلَامِ رَبِّي وَرَبُّكَ اللَّهُ
O Allah, bring it over us with blessings and faith, safety and Islam. My Lord and your Lord is Allah.
Source: Sunan al-Tirmidhī 345

It is narrated that Hazrath Bandagi Miyan Syed Khundmir Siddique-E-Vilayath ^Rz.. would stand up when he saw any migrant -companion of Imam Mahdi Alaihissalam comming.His wife suggested, ” why do you stand up? Give them something,so that they become happy.”He ^Rz..said They have seen the ocean ( that is, the personality of Imam Mahdi Alaihissalam).In other words, he said,”We are just a (small) well.”

Hazrath Ali Ul Murtuza ^Rz. said that -“Foresight is the way to safety.”