Is raising the voice in takbir obligatory when there is a fear of riya'?

The questioner : Our place is easy. Is raising the voice in takbir obligatory, and if so, what is the ruling for one who fears that people will say this is riya'?

The Shaykh : What is known among the scholars is that raising the voice in takbir is well established, except for women. And for a person to fear riya' is part of Satan frightening them so that they do not perform this sunnah (recommended practice). Satan has ways of entering upon the children of Adam, coming to them from every direction. So, if you know that this is prescribed, do it. If Satan tells you it is riya', say, "Let it be riya'."
If a person were to obey Satan in this matter, then when he entered the state of ihram and raised his voice in the talbiyah, Satan would say to him, "Do not raise your voice in the talbiyah; this is riya'." Would he obey him and not recite the talbiyah with a raised voice? No, he recites the talbiyah with a raised voice. So do not leave off an act out of fear of riya', for that is part of Satan's deception. And if Allah knows from your intention that you do not seek by it anything but the Face of Allah, then the whispers that come to your heart do not affect your intention.