Alerting the sleeper immersion on the seasons of age is a book on the seasons and division of ages and their obedience, composed by Al -Hafiz Ibn Al -Jawzi (508 AH - 597 AH). Age and acts of worship. Topics of alerting the sleeper immersion on the seasons of life: Season 1: From the time of birth to the time of puberty, and that is fifteen years. Season Two: From the time of puberty to the end of youth. Season 3: The state of the age. Season 4: Aging.