Sahih Al Bukhari (313)

عن أم عطية، عن النبي صلى الله عليه وسلم قالت: كنا ننهى أن نحد على ميت فوق ثلاث، إلا على زوج أربعة أشهر وعشرا، ولا نكتحل، ولا نتطيب، ولا نلبس مصبوغا إلا ثوب عصب، وقد رخص لنا عند الطهر، إذا اغتسلت إحدانا من محيضها، في نبذة من كست أظفار، وكنا ننهى عن اتباع الجنائز.

Um `Atiyyah (may Allah be pleased with her) narrated: We were forbidden to mourn for a dead person for more than three days except in the case of a husband for whom mourning was allowed for four months and ten days. (During that time) we were not allowed to apply kohl (Antimony eye power) in our eyes or to use perfumes or to put on colored clothes except a dress made of `Asb (a kind of Yemen cloth, very coarse and rough). We were allowed very light perfumes at the time of taking a bath after menses and also we were forbidden to go with the funeral procession .