What is the Sunnah regarding prostration for recitation and prostration of gratitude?

Question:
For prostration for recitation, is it better to stand up and then go down into prostration?

Answer:
No, he says takbir while sitting and prostrates; saying "Alhamdulillah" (Praise be to Allah) is sufficient.
Q: He says takbir?
The Shaykh: It is better, but only when prostrating, when going down.
Q: Even if he is not in a state of ritual purity?
The Shaykh: The correct view is that it is valid even if he is not in a state of ritual purity.
Q: Does he have a specific supplication?
The Shaykh: Like the prostration in prayer, he praises his Lord, extols Him, and supplicates to Him (Exalted and Majestic is He), saying: "Subhan Rabbi al-A'la" (Glory be to my Lord, the Most High), "Subhan Rabbi al-A'la" (Glory be to my Lord, the Most High).
Q: In one instance?
The Shaykh: As is easy for him, once or more, whenever something comes to him that pleases him, he says "Alhamdulillah" (Praise be to Allah).
Q: Does he say the closing salam?
The Shaykh: There is no salam and no second takbir.
Q: If something comes to him that pleases him from the matters of this world and the Hereafter, or only from the matters of the Hereafter?
The Shaykh: From the matters that benefit the Muslims, that please the Muslims and benefit them.
Q: If his child is born to him?
The Shaykh: This benefits; this is from what pleases him.