Final answer:
Guru Nanak Dev Ji's wife was Mata Sulakhni Ji, reflecting the Sikhism's value of gender equality.
Step-by-step explanation:
The wife of Guru Nanak Dev Ji, the founder of Sikhism and the first of the eleven Sikh Gurus, was Mata Sulakhni Ji. Mata Sulakhni Ji supported Guru Nanak Dev Ji and played an important role in his life, embodying the values and resilience important in Sikh tradition. In contrast to the female sages of ancient India and the later patriarchal constraints imposed on Indian women, the Sikh tradition, as demonstrated by Guru Nanak Dev Ji's respect for his wife, upheld the principles of equality and respect for all.