It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "As for what is mentioned in the Noble Qur'an: «﴿وَتَجْعَلُونَ رِزْقَكُمْ أَنَّكُمْ تُكَذِّبُونَ﴾ [الواقعة : 82]» 'You have made this your portion, that you keep denying,' its meaning is that you say: Rain has fallen because of the rising and setting of such-and-such stars."