Hawzah News Agency – The merciful prophet of Islam, peace be upon him and his household says:

مَن فُتِحَ لَهُ بابُ خَيرٍ فَلْيَنْتَهِزْهُ، فإنَّهُ لا يَدْري مَتى‏ يُغْلَقُ عَنهُ.

'He for whom a door of goodness is opened must seize the opportunity for verily he does not know when it will close.'

Source: Bihar al-Anwar, v. 77, p. 165, no. 2