Hadhrat Maulana Shah Abrarul Haq Sahab (mudda zilluhu) writes,
One day I was sitting in the haram after Maghrib and two elderly men were sitting near me. At that time many people were performing tawâf. These two men suddenly began pointing out the faults of a few of these people because they were walking very fast etc.
I went towards them and after introductions were made, I asked the one how old he was. He replied that he was 55 years old. I asked him from what age was he performing salâh, to which he replied that he was performing salâh since he had matured at the age of 15. I then asked him to mention the sunnats of salâh. He only managed to say two or three. The other person wasn’t anymore successful than his companion.
Thereafter I told them that you people are exposing the faults of these people who are performing tawâf once in a lifetime. You are performing salâh for 40 years, but you are unaware of the sunnats of salâh. Thereupon they realised their error and desisted from this act.