Theses praediorum militarium 100

...[that the Lord is able to] do so without the consent of the Vassal.

55. Yet he is not prohibited from specifically selling the Fief together with the entire court from which the Fief originates.

56. One selling or buying a Fief with the knowledge and permission of the Lord owes anakampseis and eisdektika.

57. The Lord and the Agnates who grant consent to the alienation of a Fief lose the right of pre-emption and of succession.

58. Furthermore, a legal proceeding between a Lord and a Beneficiary is one of good faith.

59. And in the name of the Fief, a vassal can bring and undergo legal actions, even without the knowledge of the Lord.

60. Indeed, he can also enter into a settlement without the Lord's knowledge, not for the sake of alienating or diminishing the Fief, but for the purpose of reaching a decision.

61. In a dispute concerning a benefice between Captains, the Emperor is the judge, having summoned the peers of the court into counsel.

62. But a controversy of greater or lesser Valvassors must be settled either by the Lord with the peers of the court summoned, or by the judge of the court.

63. But if there is a lawsuit between a Lord and a Vassal, the sworn peers of the court upon whom the Lord and the Vassal have agreed shall take cognizance of it.

64. Again, if there is a controversy between a Lord and a Vassal concerning a cause of forfeiture, the peers of the house shall judge.

65. A vassal has an equitable action of recovery for an estate given in Fief.

66. And if he possesses it, a plea belongs to him, as if for a thing that was among his assets.

67. He also has a confessory action for a servitude.

68. An action in prescribed words is granted to one who was invested while unaware that the property belonged to another or was pledged to another.

69. And a claim for restitution on account of the thing given.

70. And an action for eviction, provided only that he has notified the lord to stand by the lawsuit.

71. Conversely, a claim for restitution on account of the reason for the gift is granted to a Lord seeking service in order to reclaim the Fief, if the Vassal has ceased service for a year.

72. A vassal, however ready he may be, is not compelled to offer service.