2 verses have
“capacity”
in Edition Clear Qur'an by Talal Itani / Al-Baqara (The Cow)
2:233Mothers may nurse their infants for two whole years, for those who desire to complete the nursing-period. It is the duty of the father to provide for them and clothe them in a proper manner. No soul shall be burdened beyond its capacity. No mother shall be harmed on account of her child, and no father shall be harmed on account of his child. The same duty rests upon the heir. If the couple desire weaning, by mutual consent and consultation, they commit no error by doing so. You commit no error by hiring nursing-mothers, as long as you pay them fairly. And be wary of God, and know that God is Seeing of what you do.
2:286God does not burden any soul beyond its capacity. To its credit is what it earns, and against it is what it commits. “Our Lord, do not condemn us if we forget or make a mistake. Our Lord, do not burden us as You have burdened those before us. Our Lord, do not burden us with more than we have strength to bear; and pardon us, and forgive us, and have mercy on us. You are our Lord and Master, so help us against the disbelieving people.”
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The Holy Quran · Al-Baqara (The Cow) · 2:274