Lessons drawn from the verse:

1. Tawḥīd is the very first obligation that Allah has enjoined and the foremost right owed by the servant.
2. The statement lā ilāha illā Allah (there is no deity but Allah) incorporates both negation and affirmation, proving that tawḥīd stands only on this twin foundation: negating worship of anything besides Allah and affirming it exclusively for Him, as mentioned earlier.
3. The greatness of the parents’ right, for Allah linked their right to His own and ranked it second only to it.
4. The duty to treat one’s parents with every form of kindness, since the verse did not specify any single type to the exclusion of others.
5. The prohibition of showing disrespect or disobedience toward one’s parents.