This is the weekly Saturday morning class given at Masjid at-Tawheed in Stone Mountain, GA.
From the book Al-Mulakhas fee Sharh Kitaabit-Tawheed by Sheikh Saaleh al-Fawzaan.
You may download the original text in Arabic here: الملخص في شرح كتاب التوحيد
Chapter 30 - What Has Been Said About Al-Istisqaa (Seeking Rain) Through the Constellations