The Prophet ﷺ said:

“Allah will not be merciful to those who are not merciful to mankind.”

This is a law. The universe is built on reciprocal scales. What you extend into the world comes back to you, weighted and multiplied. The person who walks through life with a hard heart — unmoved by the suffering of others, indifferent to struggle, cold to pain — will find Allah’s Mercy equally distant from them.

‍

It is narrated that the Prophet ﷺ said:

"For every prophet there is one (special invocation (that will not be rejected) with which he appeals (to Allah), and I want to keep such an invocation for interceding for my followers in the Hereafter."

This Hadith describes a strategy of resource deferment. Every Prophet was given one "guaranteed" prayer. While most used theirs for immediate help during their lives, the Prophet ﷺ saved his for the Day of Judgment. He prioritized a future high-stakes event over short-term relief to ensure the maximum benefit for his community.