If you do not help him, (it makes no difference to the Prophet, because) Allah has already helped him when the disbelievers expelled him, and he was the second of the two, when they were in the cave, and he was saying to his companion, “Do not grieve. Allah is surely with us.”So, Allah caused His tranquility to descend on him,and supported him with troops that you did not see, and rendered the word of the disbelievers humiliated. And the word of Allah is the uppermost. Allah is Mighty, Wise.
March forth (in the way of Allah), no matter whether you are light or heavy, and carry out Jihād (struggle) in the way of Allah with your wealth and lives. That is good for you, if you were to realize.
Had it been a gain at hand or an average journey, they would have certainly followed you, but the distance seemed too far to them. They will swear by Allah: “We would have certainly set out with you, if we were able to.” They are putting themselves to ruin. Allah knows that they are liars.
(O Prophet,) Allah has forgiven you; why did you permit them (to stay in Madīnah) before the truthful ones could become distinct to you, and you could be sure of the liars.
Those who believe in Allah and in the Last Day do not ask you to excuse them from Jihād with their wealth and lives. Allah is aware of the God-fearing.
Only those people ask you to be excused who do not believe in Allah and in the Last Day and whose hearts are in doubt; so they are wavering in their doubt.