M wants to unilaterally terminate his partnership, but the partnership agreement requires mutual agreement of all partners. Under Section 40, termination can only be done through mutual consent. A was a partner entitled to 3/8 of profits but became insolvent. B and C continued the business without paying A's share. A is entitled to profits earned from his share of the assets used in the business after his insolvency, as the partnership dissolved under Section 42 when he became insolvent.