Abstaining from eating at the second adhan in Ramadan

Question:
He says: Shaykh, I advised my mother to abstain from eating at the second adhan, but she says that the white thread has not yet appeared. What is your advice to her, and is her fasting accepted?

Answer:
It is better to stop eating at the adhan as a precaution. Leave what is doubtful for what is not doubtful. If he eats a bite and the adhan is called, or drinks a mouthful of water and the adhan is called, there is no harm, as long as he does not know that the dawn has appeared, because the adhan is called as a precaution and based on the calculation. So if he drinks and the adhan is called, or eats a bite and the adhan is called, there is no harm, if Allah wills. As for the one who is in the desert before dawn, he must stop when he sees the dawn, and we have heard this from them, because the intended meaning is the saying of the Exalted and Majestic: "until the white thread becomes distinct from the black thread." They were not permitted to eat except as a precaution before the dawn became distinct. So when it became distinct, they were prohibited. If a person is in the wilderness and the dawn becomes distinct to him, it is obligatory for him to stop. As for the one who is in the town, there is no objection, out of necessity, to drinking something in his hand at the time of the adhan, or eating a bite; there is no harm. If it is a precaution for him to finish at the adhan, he should hasten a little so that the end is near the adhan. The Prophet (peace and blessings be upon him) used to delay his pre-dawn meal until he finished near the adhan, peace and blessings be upon him.