This salaat (namaz) is offered in four rakat at a time and can be read in any part of the day and night besides Zawal and Sunrise and Sunset makrooh times, keeping in mind the forbidden times for performing Salat (namaaz). But is is preferred before Zuhr (Fatawa Alamgeeri)
The Tasbih to be read in Salaat-Ul-Tasbeeh:
" Subhaan Allahi Wal Hamdulillahi Wa Laa ilaha illal Laahu Wallahu Akbar "
Goal is to recite above Tasbih 300 times in Four Rakah with the following method.
In the first rakaat, after reading Sana "Subhaana Kallahumma...", read the above tasbih 15 times.
Now recite "Aoozubillah...", "Bismillah...", Then read sura Fatiha and a Surah or minimum of three small Ayayhs then read the tasbih 10 times again.
Go to ruku saying Takbeer (Allah Hoo Akbar), after reciting "Subhaana Rabbiyal Azeem" minimum of three times then read the tasbih 10 times in Ruku.
Saying "Samee Allahu Liman Hamidah Rabbana Lakal Hamdh" get up from ruku to qiyam position.
Now read the tasbih 10 times.
Go to Sajdah saying Takbeer (Allah Hoo Akbar) and after reciting "Subhaana Rabbiyal A'la" minimum of three times then read the tasbih 10 times in Sajdah.
Now go after first Sajdah go to Jalsa (sitting position) saying Takbeer (Allah Hoo Akbar). Sitting in Jalsa read tasbih 10 times.
Go to sajda again saying Takbeer (Allah Hoo Akbar) and after reciting "Subhaana Rabbiyal A'la" minimum of three times then read the tasbih 10 times in Sajdah again.
Get up to begin 2nd rakat saying Takbeer (Allah Hoo Akbar).
Do rakah #2 in same fashion, but before reading Bismillah, and Surah Fatiha, read the tasbih 15 times. Follow the rest as you did in first Rakat.
After second Sajdah of Second Rakat sit in Qaidah Oola (first sitting) read Attahiyat, Durood and Dua then get up for 3rd rakaat without saying Salam.
Begin third Rakat, just like the first Rakat, with Sana "Subhaana Kallahumma...", read the above tasbih 15 times. Follow the rest as you did in first Rakat untill you sit for Qaidah Akihra (last sitting) after second sajdah of fourth Rakah.
In Qaidah Akihra Attahiyat, Durood, Dua finish Salah with Salam.
May Allah accept this dua’ (supplication) for the sake of the trustworthy PROPHET MOHAMMED (Allah’s Grace & Peace be upon him)
Please remember us in your duas.