The Rights of Parents in Islam

1. You should not cause them any harm even if they commit any excesses.

2. Respect and honour them in your speech and dealings with them.

3. Obey them in permissible acts.

4. If they are in need of money, assist them even if they are kafirs.

5. The following rights are due to parents after their death:
(a) Continue making duas of forgiveness and mercy for them. Continue sending rewards to them in the form of optional acts of worship and charity on their behalf.
(b) Meet their friends and relatives in a friendly way and also assist them wherever possible.
(c) If you have the finances, fulfil their unpaid debts and the permissible bequests that they have made.
(d) When they pass away, abstain from crying and wailing aloud or else their souls will be troubled.

6. According to the Shariah, the rights of the paternal and maternal grandparents are similar to those of the parents and they should be regarded as such.

7. Similarly, the rights of the maternal and paternal uncles and aunts are similar to those of the parents. This has been deduced from certain Ahadith. (Rasulullah sallallahu alayhi wa sallam said: "The maternal aunt has the status of one’s mother." - Tirmidhi)

Reference: Rights In Islam Written By Maulana Ashraf Ali Thanvi Rahmatullah Alaihi