The Prophet SAWS: On Dua and Qadr…
The people asked the Prophet SAWS, “What do you think of the medicines, recitations, and precautions (we use against sickness)? Will they change the decree (qadar) of Allah at all?” He SAWS replied, “They are part of the decree of Allah.”
In another hadith, he SAWS said, ” Dua (supplication) and decreed calamities meet and wrestle between Heaven and Earth. ” [Ahmad, Ibn Majah, al-Tirmidhi]
Al-Ubudiyah, Ibn Taymiyah

I do not understand this hadith
Which one? There are two…