Drinking after the adhan out of ignorance of the time in Ramadan: Is it obligatory for me to make up that day?

Question:
She says: Honorable Shaykh, may Allah grant you success. I fasted the first day of the six days. In Ramadan, my colleague woke me up after the Fajr adhan and told me that the Fajr adhan had been called, but due to the heaviness of sleep, I did not hear it. So I drank water, believing that the dawn had not yet appeared. Then it became clear afterwards that it had appeared. The question is: What is the ruling on my fasting on that day? And do I have to make it up? And if I have to make it up, what is the ruling on my fasting for one of my six days? Do I make that up as well?

Answer:
As long as you drank after the dawn had appeared, your fast is not valid, so you have to make it up. And the fact that you fasted one day of the six days is fine; your fast is valid. So you make up the missed day, then you complete the six. You fast five days along with the first day, and that makes six. There is no obstacle. Yes.