Equal to Hajj?

With regard to sitting after Fajr prayer until the sun rises then praying two rak’ahs, it is narrated that the

Prophet (peace and blessings of Allaah be upon him) said: “Whoever prays Fajr in congregation then sits remembering Allaah until the sun rises, then prays two rak’ahs, will have a reward like that of Hajj and ‘Umrah, complete, complete, complete.” Narrated by al-Tirmidhi (586).

Shaykh al-Albaani (may Allaah have mercy on him) :classed it as hasan in Saheeh Sunan al-Tirmidhi.

Shaykh Ibn Baaz (may Allaah have mercy on him) was asked about it and he said:
This hadeeth has some isnaads with which there is nothing wrong, thus it is regarded as hasan li ghayrihi (hasan because of corroborating evidence), and it is mustahabb to offer this prayer after the sun has risen to the height of a spear, i.e., approximately fifteen or twenty minutes after sunrise. End quote from Fataawa al-Shaykh Ibn Baaz (25/171).

Shaykh Ibn ‘Uthaymeen (may Allaah have mercy on him) was asked: It says in the hadeeth, “The one who sits in the place where he prayed after Fajr prayer until the sun rises, it will be like a complete, complete Hajj and ‘umrah,” or words to that effect. Does this mean that the one who does that will have the reward like that of Hajj and ‘umrah, or what does it mean?

He replied: Firstly: this hadeeth is subject to further discussion. Many scholars classed it as daeef (weak). Secondly: if we assume that it is saheeh, the reward of Allaah is not subject to analogy. A person may be rewarded greatly for a small deed, because the reward is a bounty from Allaah that He gives to whomsoever He will. End quote from al-Liqa’ al-Shahri (74/22).