Have you ever wondered why the Shia all around the world, stand and put their hands on their head at the mention of al-Qa’im?

Imam Sadiq (as) was asked about why when the name of the al-Qa’im is mentioned, all must stand. The Imam (as) replied,
“The Qaim’s occultation will be prolonged, and this name is a remembrance of his future ruler ship and a way of expressing sorrow for his loneliness. As a result, he takes a caring look at the followers of his who remember him with this name out of the love and affection he has for them. It is respectful for the humble servant to stand before his master (the master of his time) when he (the master) is looking at him. Therefore, he must stand and pray for the return of his master.”

In another narration – in a gathering in Khorasaan, the name of Imam al-Hujjah (aj) was mentioned, and upon hearing, Imam al-Ridha (as) stood up and put his hand on his blessed head and said: “May Allah (swt) hasten his reappearance and make his emergence easy”

Also, when De’bel ibn Ali al-Khoza’ee recited his famous poem for al-Ridha (as) and he mentioned al-hujjah (aj) with the following lines:
“A Divine Leader shall rise – surely he is to rise,
In God’s name and His Blessing he shall rise;”
Imam al-Redha (as) stood up and put his hand on his head and arose in respect, praying for the emergence of Imam Zaman (aj).

Source: Mustadrak Safinatal Bihaar, al-Sheikh Ali al-Namaazi al-Shahroodi, Volume 8, Pages 628-629 (See Image below)