And He said:

“Strive for Allah as He deserves. He has chosen you and has placed no hardship upon you in religion.”
Surah al-Hajj, 78

And He said when He made jihad obligatory:

“There is no blame upon the weak, the sick, or those who have nothing to spend, provided they are sincere towards Allah and His Messenger.”
Surah al-Tawbah, 91

And He said:

“Those believers who remain behind, other than those with disabilities, are not equal.”
Surah al-Nisā’, 95

And He said concerning migration:

“Indeed, those whom the angels take in death while they are wronging themselves,”

up to His words:

“Except the helpless among men, women and children who have no means and cannot find a way. These Allah may pardon, for Allah is ever Pardoning, Forgiving.”
Surah al-Nisā’, 98–99

And He, the Most High, said concerning spending:

“They ask you what they should spend. Say, ‘Whatever is beyond your needs.’”
Surah al-Baqarah, 219

And He said in general terms:

“Allah does not burden any soul beyond its capacity. It will have the good it has earned, and bear the evil it has earned. Our Lord, do not take us to task if we forget or make a mistake. Our Lord, do not lay upon us a burden like that which You laid upon those before us.”

To the end of the verse.
Surah al-Baqarah, 286