The Quran

127

وَاصبِر وَما صَبرُكَ إِلّا بِاللَّهِ ۚ وَلا تَحزَن عَلَيهِم وَلا تَكُ في ضَيقٍ مِمّا يَمكُرونَ

Muhammad Asad

Endure, then, with patience [all that they who deny the truth may say] - always remembering that it is none but God who gives thee the strength to endure adversity¹ - and do not grieve over them, and neither be distressed by the false arguments which they devise:²

Lit., "and thy patience in adversity (sabr) is due to (or. "ream with"] none but God"- i.e., it must never be allowed to become a source of spiritual arrogance and false self-righteousness.
Lit., "all that they are scheming", i.e., by inventing false and irrelevant arguments against God's messages.