Shirk, Parents and false witness
Among the major sins is disobedience to parents. Narrated by Abu Bakra (ra) Allah’s messenger (saw) said: “Shall I inform you of the greatest sins and in another variation he repeated this three times. We the companions said, “Certainly, O messenger of Allah! He (saw) said: “Associating anyone with Allah, disobedience to parents”. The prophet sat up straight after he had reclined and added, “And I warn you against false utterance and false witness, “And I warn you against false utterance and false witness”. The messenger of Allah (saw) kept saying that warning until we thought that he would not stop”.
The messenger of Allah (saw) always repeated his sentences three times to make an emphasis. Shirk (associating partners with Allah) will not be forgiven.(if one dies without asking for forgiveness. And the one who is disobedient to his parents will definitely spend some time in the hellfire however this action will not take you out of the fold of Islam. Grandparents are also included however parents have more right. Before a man accuses someone else of an action he must be a 100% sure and anything less is unacceptable.
Explained by Abu abdillah Yunus Ibn Mahmoud