Reference: Mawaaqif madhee.ah fee hayaat al-Imaam ‘Abdul-‘Azeez Ibn Baaz – Page 194-195
Sa’d ad-Daawood narrates:
The Shaykh was very careful in how he spent his time;
If he was to travel by car to deliver a lecture or to [simply] attend a gathering, then a number of books would be read to him, [so much so that] I don’t know how many books have been read to him whereby he would make beneficial notes in them. And when he was asked about [all] this, he [simply] said:
“This is just to pass the time.”