Translation:

256. Let there be no compulsion in religion. Truth stands out clear from error; whoever rejects evil and believes in Allah hath grasped the most trustworthy hand-hold that never breaks. And Allah heareth and knoweth all things.

Notes (Tafseer)

300. Compulsion is incompatible with religion; because 1) religion depends upon faith and will, and these would be meaningless if induced by force; 2) Truth and Error have been so clearly shown up by the mercy of God that there should be no doubt in the minds of any persons of goodwill as to the fundamentals of faith; 3) God's protection is continuous and His Plan is always to lead us from the depths of darkness into the clearest light.

301. Hand-hold: something which the hands can grasp for safety in a moment of danger. It may be a loop or a handle, or anchor. If it is without flaw, so that there is no danger of breaking, our safety is absolutely assured so long as we hold fast to it. Our safety then depends on our own will and faith; God's help and protection will always be unfailing if we hold firmly to God and trust in Him.